823992012 has 36 divisors (see below), whose sum is σ = 2089594416. Its totient is φ = 273777120.

The previous prime is 823991963. The next prime is 823992017. The reversal of 823992012 is 210299328.

823992012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (823992017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25603 + ... + 47994.

Almost surely, 2^823992012 is an apocalyptic number.

It is an amenable number.

823992012 is an abundant number, since it is smaller than the sum of its proper divisors (1265602404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823992012 is a wasteful number, since it uses less digits than its factorization.

823992012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73918 (or 73913 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 823992012 is about 28705.2610508945. The cubic root of 823992012 is about 937.5066000602.

The spelling of 823992012 in words is "eight hundred twenty-three million, nine hundred ninety-two thousand, twelve".